Genesis

The General Electric Genesis (aka AMD-103) is Amtrak's most common locomotive.

P40DC
Initial variant. 8 of Amtrak's P40DCs were sold to CTrail and 4 were sold to NJT. NJT eventually sold theirs to CTrail. Amtrak's remaining P40DCs were upgraded to P42DC status.

P42DC
Improvement of P40DC. Most produced variant. VIA Rail also ordered examples.

P32AC-DM
Dual-mode variant, used by Amtrak mainly between NYC Penn Station and Albany Rensselaer. Electric mode used in Empire Connection tunnels leading to Penn Station. Metro-North also ordered examples for select operations into and out of Grand Central.

Routes
It is used on most trains outside the Northeast Corridor. The Keystone Service never uses the Genesis, it uses the Amtrak Cities Sprinter.

Most Pacific Surfliner, Capitol Corridor, San Joaquin, and Piedmont trains use state-owned locomotives, but occasionally they use Amtrak-owned locomotives, such as the Genesis. In addition, many Midwestern short-distance trains often use the SC-44 Charger, but sometimes the Genesis.